No module named 'job'

[viaSeunghyun]

Python: 3.6.9
ROS: Melodic
Branch: melodic-devel

Error:

Traceback (most recent call last):
  File "/home/nvidia/robot_arm/ros/src/robot_upstart/scripts/install", line 29, in <module>
    from robot_upstart.install_script import main
  File "/home/nvidia/robot_arm/ros/devel/lib/python3/dist-packages/robot_upstart/__init__.py", line 34, in <module>
    exec(__fh.read())
  File "<string>", line 24, in <module>
ModuleNotFoundError: No module named 'job'